In　order　to　study　the　dynamic　changes　of　the　macro　vulnerability　of　the　lifeline　system　in　Beijing-Tianjin-Hebei　region,　we　constructed　an　index　system　from　two　aspects　to　describe　the　spatial　difference　of　the　macro　vulnerability　of　lifeline　system　in　Beijing-Tianjin-Hebei　region;　one　is　sensitivity,　the　other　is　response-resilience　ability.　In　this　study,　we　evaluated　the　risk　assessment　of　the　lifeline　system　for　the　study　area　by　the　Maximum　Information　Entropy　(MIE)　model.　The　highest　and　higher　risk　areas　in　Beijing-Tianjin-Hebei　region　reach　50%　and　the　medium　or　medium　above　reach　92%.　Meanwhile,　we　analyzed　the　space-time　characteristics　of　the　macro　vulnerability　to　lifeline　system　of　Beijing-Tianjin-Hebei　region.　The　spatial　changes　of　the　vulnerability　are　different　on　the　forms,　extent　and　main　driving　factors　and　the　cities　of　Beijing,　Tianjin　and　Tang　are　more　vulnerable.　The　vulnerability　of　Beijing　floats　severely　and　that　of　Tianjin,　Tangshan　and　Langfang　are　above　the　regional　average　level.　The　vulnerability　of　Shijiazhuang,　Zhangjiakou,　Chengde,　Qinhuangdao　and　Xingtai　had　a　downward　trend　while　that　of　the　other　cities　floated　around　the　regional　average　level.　Copyright　©　2018　The　Authors,　some　rights　reserved.